worn and tattered by his harsh mountain life. 受尽了严酷山区生活的折磨
forged by its clever mammalian brain. 这要归功于它聪明的哺乳动物大脑
This female is already closely guarded by a male, 这只雌巨角犀 已经被一只雄巨角犀严密地守护着
ruled over by the greatest dynasty that ever lived... 被史上最伟大的王朝所统治
They're joined by an extraordinary bird. 还有一种非同一般的鸟
The revival was powered by a huge increase... 这次复苏的动力
global temperatures plunged by a staggering 25 degrees. 全球气温骤降25度
These survivors were kept warm by feathers... 这些幸存者靠羽毛保暖